python出现modify怎么办（解决Python找不到ssl模块问题 No module named _ssl的方法）

python出现modify怎么办

解决Python找不到ssl模块问题 No module named _ssl的方法

python安装完毕后，提示找不到ssl模块：

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[www@pythontab.com ~]$ python python 2.7.15 (default, oct 23 2018, 18:08:43) [gcc 4.4.7 20120313 (red hat 4.4.7-23)] on linux2 type "help", "copyright", "credits" or "license" for more information. >>> import ssl traceback (most recent call last): file "<stdin>", line 1, in <module> file "/usr/local/python27/lib/python2.7/ssl.py", line 60, in <module> import _ssl # if we can't import it, let the error propagate importerror: no module named _ssl >>>

解决方法：

1. 查看openssl安装包，发现缺少openssl-devel包

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[www@pythontab.com ~]$ rpm -aq|grep openssl openssl-0.9.8e-20.el5 openssl-0.9.8e-20.el5 [www@pythontab.com ~]$

2. yum安装openssl-devel

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[www@pythontab.com ~]$ yum install openssl-devel -y #查看安装结果 [www@pythontab.com ~]$ rpm -aq|grep openssl openssl-devel-1.0.1e-57.el6.x86_64 openssl-1.0.1e-57.el6.x86_64

3. 重新编译python

修改setup文件

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1	vi /src/python-2.7.15/modules/setup

修改结果如下：

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# socket module helper for socket(2) _socket socketmodule.c timemodule.c # socket module helper for ssl support; you must comment out the other # socket line above, and possibly edit the ssl variable: #ssl=/usr/local/ssl _ssl _ssl.c \ -duse_ssl -i$(ssl)/include -i$(ssl)/include/openssl \ -l$(ssl)/lib -lssl -lcrypto

4. 重新编译

进入源码目录，重新编译安装

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[www@pythontab.com ~]$ cd /src/python-2.7.15/ [www@pythontab.com ~]$ make [www@pythontab.com ~]$ make install

5. 测试，已可正常使用。

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[www@pythontab.com ~]$ python python 2.7.15 (default, oct 23 2018, 19:08:43) [gcc 4.4.7 20120313 (red hat 4.4.7-23)] on linux2 type "help", "copyright", "credits" or "license" for more information. >>> import ssl >>>

注：如需保留旧版本的就不需要执行 6 .7两部

6 重命名旧版本的python依赖

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1 2	ll /usr/bin | grep python mv /usr/bin/python /usr/bin/python2.7

7 删除旧的软链接，创建新的软链接到最新的python

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rm -rf /usr/bin/python ln -s /usr/local/bin/python3.6 /usr/bin/python python -v

使用yum命令报错file "/usr/bin/yum", line 30 except keyboardinterrupt, e:

问题出现原因：

yum包管理是使用python2.x写的，将python2.x升级到python3.1.3以后，由于python版本语法兼容性导致问题出现

解决办法：

修改yum配置文件，将python版本指向以前的旧版本

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# vi /usr/bin/yum #!/usr/bin/python2.7 修改urlgrabber-ext-down文件，更改python版本   # vi /usr/libexec/urlgrabber-ext-down #!/usr/bin/python2.7 could not fetch url https://pypi.python.org/simple/six/: there was a problem confirming the ssl certificate: can't connect to https url because the ssl module is not available. - skipping

如需安装pip

下载相关文件

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1	curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

执行

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1	/usr/local/python/bin/python3 get-pip.py

添加环境变量

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1	vim ~/.bash_profile

添加下面这条参数

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1	export path=/usr/local/python/bin:$path

保存

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1	source ~/.bash_profile

测试

执行

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[root@huo ~]# python3 python 3.6.5 (default, apr 1 2018, 20:41:34) [gcc 4.8.5 20150623 (red hat 4.8.5-16)] on linux type "help", "copyright", "credits" or "license" for more information. >>>

执行脚本如下:

vim install_python.sh

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#!/bin/bash echo "正在安装相关组件" yum install -y openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel gcc-c++ gcc openssl-devel   echo "下载安装包" wget https://www.python.org/ftp/python/3.6.5/python-3.6.5.tgz   echo "正在解压安装包" tar -xf python-3.6.5.tgz -c /root/ && cd /root/python-3.6.5/   echo "添加ssl支持" cat >> /root/python-3.6.5/modules/setup.dist <<"eof" _socket socketmodule.c   ssl=/usr/local/ssl _ssl _ssl.c \ -duse_ssl -i$(ssl)/include -i$(ssl)/include/openssl \ -l$(ssl)/lib -lssl -lcrypto eof   echo "正在编译安装python" ./configure --prefix=/usr/local/python && make && make install cd /root   echo "删除安装包" rm -rf /root/python-3.6.5.tgz && rm -rf /root/python-3.6.5   echo "正在添加环境变量" echo "export path=/usr/local/python/bin:$path">> ~/.bash_profile source ~/.bash_profile   echo "安装完成,请执行python3进行测试"

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原文链接：https://www.pythontab.com/html/2018/pythonjichu_1024/1366.html